Rb25 s2 missfires when boost turned up

[dee242]

Hey i got r33 rb25 s2 is pree much stock has 89 k and had 100k service done coilpacks are good and sparkplugs are gapped to 0.8. They are the bp7res plugs boost controller is a blitz sbc some one help its fine all throught revrange on stock boost

[Skym]

Make sure there is no intake airleaks before MAF (Maxes MAF voltage which hits the boost cut earlier than it should on ECU) or after MAF (makes engine stutter, which is similar to coilpack not working on one cylinder).

[99_SI]

How much boost ? .8 too small for stock engine with stock turbo/injectors

[dee242]

I fixed the missfire i re gap plugs to .06 and coated coilpacks in liquid electrical tape. I also did a smoke test turns out my apexi dual chamber bov is leaking and either and ajustment screw or a hose underneath the far side of the intake manifold is leakin (closest to the firewall)

[dee242]

bov was also leaking car runs supper smooth now never thought rbs would be so finicky